Flexible nozzle



Patented July 7, 1942 FLEXIBLE NOZZLEL Russell. K; Nash,- lrqoklinei;`Mass., assigner toV B. B: Chemical Co.,Y Boston,A Mass.,y a,corporationoli-Massachusetts s Application-January 25, 1940;r Seria-LNDl315,570

. i s l 7 claims., This. invention relatesto; coating: apparatusancl;isl herein illustrated as embodied' in amachine such as that disclosedin Letters Patent of thev United States 2;100,34-1, granted Novem-ber30, 1937, upon the-application of- Wilbur; L. Mac- Kenzie-forapplying aribbon of cement to the margin of a shoe bottom.`

It is-an object ofthepresentinventiongto; pro--` vide an:articulatednozzle fsuitable for use-in machines-` ofthe characterabove;referred to,- which` will apply an. even ribbon of cement regardless;

and; having aligned outlets closely4 associatedto-f PassagewaysVthrough-- apply-aribbon of cement'. these ball and-socket, connectionsjoin-the sup--` ply passage of' thesupport-ing memberand' the.l

passageways in the-tubes.

The invention will be better understood when considered with relationto.- thev accompanying drawing, in which Fig. l is an end-elevation of-.the-headof amachine of theftypefshown in the MacKenzie-patentabovereferred to, towhich7 ist. appliedV my`v im,-

proved nozzle;

Fig. 2 is a cross sectionof-` thenozzlealongithe-i line IIl--II of Fig.1;`

Fig. Bis a. perspectivel view of thev nozzle; and` Fig. 4 is a view-of.the ends of the delivery tubes.

showing thel outlet .openings therein.

As` in machines of thetypeillustratedin.- the.

patent. above referred to and. used for. cementingv shoe bottoms towhichr soles are` to be attached, by cement, a rubber-tired feed Wheel|01 for engaging the side of an inverted shoe is journaled in a memberI2 supported between the sides of a frame I 4'. On this frame there isan adjustable nozzle carrier lli` having an outwardly` extending rod-`I8 towhich a nozzle arm 20- is secured by means of a clamp 22; Attachedto the lower end ofl this arm l20-is a block 24 having a supply passage26 to which cement under pressure-is conducted from a receptacle (notshown)- by means of a pipe-28';

In order that' the operator may readily-shutoilthe supply of cement aseach piece-of work-is-v withdrawn from the machine and' turnitv onagainfor thenext piece-of work, aval've rod` 30i`s. slidably mounted in thepassage 26? and extends ways-and alsoito -reducethetendencyrof thetubesA far enough.intoisaidipassage; as-determinediby a limitl nut.32,130. cut 01T; the: supply: of cement; delitteredy through the pipe-28; A'v bracket 34 attachedtozthe' nozzle-supporting arm 20t isaperturedfatt toguide the upper endfof the rod 30 and toserve as an.`abutmentv for a` compression spring:v 3-8; surrounding, that rod andbearing against a collar 405 thereon.` IIll-*his spring moves the valve`rod tothe closed' position shown in Fig.. L. When` theoperator-wishes toopen the valve, he turnsaashaft 421by'means of' aconnectiong toatread'le (not` shown); This shaft is journaled in the, arm 20 and.' is.provided 'with a camA 44;- adapted to engagethe under side of a lever46. The-lever. 4B! ispivotedl at' 431v on the bracket 434 and-atitslouter-endv 49 surrounds the vialvesrocland underliesthe collar 40..

The nozzle itself is builtl around aV bleek or supportingzmember 50secured to a neck` 52 on the blocka24`fby` a set screwl 54. As shown inFig. 2, the forward portion l'ri'of.` the block 5i! is drilled to.formfourhemispherical recessesinto which are insertedthe'hemisphericalends 53 of hubs 60 Therecessesfor theV hubs are spacedatintervals about; the` sides ofr'the forward portion of. the block.SESSO-.as to leave ample room' forA thehubs and the tubesf topivot`inzth-eir sockets,- they outer tubesA 02' being connected toA theoppositev sides of the lower portion of the block; and the inner tubes'64 being connected"v tothe oppositev sides ofE the upper` portion ofitheblock'. The. inner` tubes are bent slightly'so` thatjthe ends of'all-the tubes, which are squared to-permitthem to bebrought;-closer'together; will lie-in approximately the same plane'.-and' kwith the` outlet openingsV aligned andI arrangedcontiguouslytoapply merging stripes forming: a ribbonofcement.

The supply -pa-ssage' 26 is-:connectedv to-passagehubs* to `thepassagewaysjin the-tubes; The passageways in the tubes aresufficientlysmall so that; when cement is-Y not .being-` pumpedthroughthemcapil1ary actionV will prevent themfrom drooling. The outletopenings 'l0 ofthe tubes, however, are larger than the: main-portion ofthe passagewaysto: simplify cleaning off the passageto apply the cementin a series of strings. It is to be noted (Fig. 4), that the outletopenings of the outer tubes 62 are slightly smaller than the outletopenings of the inner tubes. By such an arrangement, a more even ribbonof cementI is obtained and, in addition. the relative smallness of theopenings in the two outer tubes assists ns 'I2 in confining the marginsof the ribbon to proper bounds.

To hold the hubs 60 of the delivery tubes tightly against the forwardportion 56 of the block and thus keep the ball and socket connectionstightly sealed against leakage, there are provided two plates 14,preferably of spring metal, which are secured to the sides of thesupporting member 5U by screws 16. Ears 18 on the spring plate 14 arebored to receive pins 8l] integral with the hubs so that the tubes mayswivel about the axis of the pins 8U but cannot move sideways. Downwardmovement of the tubes is limited by a plate 82 secured on the bottom ofthe forward portion 56 of the supporting member by a screw 84. A numberof pins 86 are fastened to the forward end of this plate, one for eachof the delivery tubes, so that when the latter move downwardly they willstrike these abutment pins.

Two pins 88 are also secured to the bottom plate 82 to provide somesupport against lateral bending of the outer delivery tubes by the work.

The tubes are yieldably held against the abutment pins 86 by a series ofsmall leaf springs 96 clamped to the supporting member 56 by a notchedplate 92 held in place by nuts 94. Pins 96 are secured to the forwardends of the leaf springs 90 and the end of each pin enters a recessformed in an upstanding neck 98 integral with each of the deliverytubes. Thus, the tubes are held in their lowest position by the leafsprings but may yield upwardly when they encounter an irregularity inthe work piece beneath them. This arrangement is not claimed herein,however, since it forms part of the subject-matter of an applicationSerial No. 312,539, filed January 5, 1940, in my name.

The operation of the nozzle is believed to be self-explanatory. When theoperator depresses the treadle to move the valve rod 30, the cemententers the supply passage 2B and passes through the hubs into thedelivery tubes and thence through the contiguous outlet openings 10 ontothe work. It will be found that a nozzle of this type will apply an evenribbon of cement along the margin of a shoe bottom, regardless of itsirregularities and regardless of the marginal contour of the shoe.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In an apparatus for extruding a stripe of viscous coating material onan irregular surface, a nozzle comprising a supporting block having asupply passage centrally located therein, a plurality of delivery tubesprovided with passageways, two of said tubes being articulatelyconnected to opposite sides of one portion of said supporting block atone side of said sup-ply passage and other of said tubes beingarticulately connected to other portions of said supporting block at theother side of said supply passage, and passages through the points ofconnection joining said supply passage and the passageways in saidtubes,

2. In an apparatus for extruding a stripe of viscous material onA anirregular surface, a ilexible nozzle comprising a supporting memberhaving a supply passage, a plurality of delivery tubes provided withpassageways and articulately connected to said supporting member atpoints spaced heightwise thereof for free heightwise movement, and meansfor holding said tubes against a piece of work presented thereto, saidtubes having aligned applying ends provided with outlet openingsarranged contiguously to apply a stripe of coating material to a workpiece moved progressively past the nozzle, said supply passage and thepassageways in said tubes being interconnected.

3. In an apparatus for extruding a stripe of viscous coating material onan irregular surface, a nozzle comprising a supporting member having asupply passage, a plurality of delivery tubes provided with passagewaysand joined by freely turning ball-and-socket connections to oppositefaces of said supporting member, said connections having passagesinterconnecting the supply passage with the passageways in the tubes,said delivery tubes having aligned applying ends provided with outletopenings arranged contiguously to apply a stripe of coating material toa work piece, and means for holding said tubes against a piece of workprogressively presented theretov 4. In an apparatus for eXtruding astripe of viscous coating material on the irregular surface of a pieceof work, a nozzle comprising a supporting member having a supply passageand provided with sockets opening outwardly and connected with saidsupply passage, and a plurality of delivery tubes yieldably held down ina predetermined position relatively to said supporting member andconstructed and arranged for upward deflection by work presentedthereto, said tubes having ball-shaped end portions freely tiltable insaid sockets and provided with passageways opening through theball-shaped portions and extending to outlet openings in the free endsof the tubes, said free ends having aligned ends provided with outletopenings arranged contiguously to apply a stripe of coating material toa work piece moved in contact with said 5. In an apparatus for extrudinga stripe of viscous coating material on an irregular surface, a nozzlecomprising a supporting block, a supply passage centrally locatedtherein, a plurality of delivery tubes provided with passageways andhaving hubs joined by ball and socket connections to said supportingblock, two of said hubs being connected to opposite sides of one portionof said supporting block at one side of said supply passage and other ofsaid hubs being connected to other portions of said supply block atanother side of said supply passage, and means for connecting the supplypassage to a source of supply of coating material.

6. In an apparatus for eXtruding a stripe of viscous coating material anon irregular surface, an articulated nozzle comprising a supportingmember having a supply passage, a plurality of delivery tubes providedwith passageways and having hemispherical hubs constructed and arrangedto t into complementary sockets spaced about said supporting member,yieldable members holding said hubs in engagement with said sockets,means for holding the delivery ends of said tubes in engagement with apiece of work presented thereto and passageways through said hubsconnecting said supply passage and the passageways in said tubes, theoutlets of said tubes being arranged contiguously to apply a series ofmerging parallel stripes of coating material to a Work piece.

'7. In an apparatus for extruding a stripe of viscous coating materialon an irregular surface, a nozzle comprising a supporting block having asupply passage, delivery tubes provided with passageways terminating inoutlet openings at the lower ends of said tubes, said tubes beingpositioned in groups upon the opposite sides of said supporting blockand communicating with said supply passage, said tubes being looselypivotally connected to and removable individually from said block, asupport positioning said tubes in a position inclined downwardly fromsaid supporting member, means for yieldably holding said tubes againstsaid support and arranged to permit upward deflection of the outlet endsupon the presentation of a piece of Work thereto prior to movement pastthe tubes, and individual yieldable means pressing each tube againstsaid block to maintain the pivotal connection of said tubes 10 with thesupporting block.

RUSSELL K. NASH.

